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  • BSI
    BS 4678-2:1973 Cable trunking - Steel underfloor (duct) trunking
    Edition: 1973
    $281.30
    / user per year

Description of BS 4678-2:1973 1973

This British Standard specifies requirements for steel underfloor (duct) trunking, and connectors, intended for the protection of cables in electrical installations which are laid on a structural floor and subsequently covered with a floor screed.

The specification includes underfloor (duct) trunking having nominal sizes of 75.0 × 25.0 millimetres to 225.0 × 37.5 millimetres. It does not relate to surface (see BS 4678-1), bench, flush floor, overhead lighting or skirting trunking.

NOTE The titles of the British Standards referred to in this standard are listed on the inside back cover.



Trunking and connectors intended for the protection of cables laid on a structural floor and subsequently covered with a floor screed. Requirements and tests in Part 1, modified as necessary for underfloor trunking, are applicable to this Part.

Standard NumberBS 4678-2:1973
TitleCable trunking - Steel underfloor (duct) trunking
StatusConfirmed
Publication Date1973-10-15
DescriptorsPipe connections, Electric cables, Pipe fittings, Marking, Thickness, Electric cable systems, Dimensions, Steels, Embedded conduits, Electric conduits, Trunking, Ducting, Electrical installations, Joints
ICS29.120.10 Conduits for electrical purposes
CommitteePEL/213
ISBN0 580 07566 4
PublisherBSI
Pages10

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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